24
06.2019
6.6 Installation, mounting, Initial commissioning
Operating manual
Centrifugal fans
HF R | RV | MRV
www.hlu.eu
Installation, mounting and initial commissioning of the fan are performed by qualied personnel
of manufacturer or by qualied customer personnel that must have been trained adequately
for this work.
J The constructional arrangement of the fan must ensure that operational underpressure con-
ditions are present at the shaft passage.
J Check on the basis of the static of the building, if it is adjustable for the burden of the fan
and if the bottom is at.
J The installation of the fans and their components are based on the on-site installation plan.
J The fan must be mounted on vibration dampers. The Vibration absorbers used for instal-
lation of the fan must be mounted by means of screws in the marked and readily drilled
positions in the foundation frame and fastened with bolts in the on-site foundation.
J We recommend a circumferential distance of approx. 1.5 m to 2 m, for maintenance work at
the fan.
For maintenance work at the inlet side oft the fan, the housing cover should be removed if
necessary. Therefore we advise mounting a removable pipe section of approx. 1 m in front
of the fan if the fan cannot be postpone.
J The fan must not be operated in non-installed condition. The impeller must be free to move
without any impediment at all times.
J Mount the (on-site) pipe.
J The fan is equipped with a terminal box (or maintenance switch) for connecting to the mains
supply. The motor enclosure must be closed using a sealing joint certied according to
the EN IEC 60079-0 and EN IEC 60079-1 standards. Users will have to connect the cable
terminals using one of the protection types specied in standard EN 60079-0. The energy
supply can be cut o using an onsite maintenance switch (if it is not already installed at the
fan).
J Check before the rst operation that the turning direction is correct (direction arrow on the
fan housing) and that the max. speed is not exceeded (see nameplate).
J If there is danger of foreign parts falling into the fan or being aspirated, the connected pipe
upstream and downstream of the fan must be provided with a protective grid (min. IP20 to
EN 60529).
J The motors are designed for a maximum ambient temperature of 40 °C. Ventilation must not
be impaired. The minimum distance between fan housing and adjacent objects must be ¼
of the diameter of the ared fan housing bezel.
J If the fan shall be installed outdoor, we recommend a protection of the drive motor against
water.
J The inside of the fan and of upstream and downstream channels and units must be keptfree
from foreign bodies.
J After a run-in period of 1 or 2 hours check the drive at regular intervals and re-tighten the
belts, if necessary.
J The condensate drain at the bottommost point of the housing has to be connected.
J See point 3.2.
J Ensure that connected lines do not carry loads which lead to a distortion of the fan housing.
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General